A THP-1 Cell Line-Based Exploration of Immune Responses Toward Heat-Treated BLG

Frontiers in Nutrition

Aalt-Jan van Dijk¹  Ellen ter Beest²  Ying Deng²  Harry J. Wichers²  Kasper Hettinga³  Coen Govers⁴ 

[1] Bioinformatics Group, Department of Plant Sciences, Wageningen University and Research, Wageningen, Netherlands;Food Chemistry, Department of Agrotechnology and Food Sciences, Wageningen University and Research, Wageningen, Netherlands;Food Quality and Design, Department of Agrotechnology and Food Sciences, Wageningen University and Research, Wageningen, Netherlands;Food and Biobased Research, Wageningen University and Research, Wageningen, Netherlands;

关键词: β-lactoglobulin;    THP-1;    macrophage;    dendritic cell;    heat-treatment;    microarray;   

DOI  :  10.3389/fnut.2020.612397

来源: DOAJ

【 摘 要 】

Allergen recognition and processing by antigen presenting cells is essential for the sensitization step of food allergy. Macrophages and dendritic cells are both phagocytic antigen presenting cells and play important roles in innate immune responses and signaling between the innate and adaptive immune system. To obtain a model system with a homogeneous genetic background, we derived macrophages and dendritic cells from THP-1 monocytes. The difference between macrophages and dendritic cells was clearly shown by differences in their transcription response (microarray) and protein expression levels. Their resemblance to primary cells was analyzed by comparison to properties as described in literature. The uptake of β-lactoglobulin after wet-heating (60°C in solution) by THP-1 derived macrophages was earlier reported to be significantly increased. To analyse the subsequent immune response, we incubated THP-1 derived macrophages and dendritic cells with native and differently processed β-lactoglobulin and determined the transcription and cytokine expression levels of the cells. A stronger transcriptional response was found in macrophages than in dendritic cells, while severely structurally modified β-lactoglobulin induced a more limited transcriptional response, especially when compared to native and limitedly modified β-lactoglobulin. These results show that processing is relevant for the transcriptional response toward β-lactoglobulin of innate immune cells.

【 授权许可】

Unknown